Paton ProMIG-200, User Manual, Page: 102 / 130

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PATON ProMIG DC MMA/TIG/MIG/MAG
To implement this function in the device, you need to set three parameters:
pulsation power [Po.P], pulsation frequency [Fr.P] and pulse/pause ratio (or "duty cycle")
[dut]. By default, pulsation power [Po.P] as a key parameter is set to OFF, i.e., the function
is turned off, and pulsation frequency [Fr.P] and "duty cycle" [dut] at the most common
values of 5.0 Hz and 50%, respectively. To enable the function, simply set the pulsation
power [Po.P] above zero. This parameter is set as a percentage of the used main welding
current set.
Example: welding with Ø3mm electrode, the set main value of the weldi ng current
is 60A, and the pulsation power [Po.P] = 40%, while the pulsation frequency [Fr.P] = 5.0Hz
and the "duty cycle" [dut] = 50% by default.
Result: the current will pulse from 36A to 84A with a frequency of 5 Hz; the pulses will have
an equal shape both in amplitude and in time.
The “duty cycle” parameter is set to 50% by default. If this parameter is changed
from 50%, an asymmetry between the current pulse time and the current "pause" time is
introduced:
default
"duty cycle" [dut] = 50%
"duty cycle" [dut] = 20% "duty cycle" [dut] = 70%
The unit will react in such a way that the average current level during the welding
process will be at the level of the set main value of the welding current 60A (as it was set),
respectively, and the heat input to the welding seam will be at the level of the same 60A, but
the stability of the welding process and the mixing of the weld pool will change. This is a very
important condition for the user to accurately estimate the change in the heat input to the
weld pool, e.g., by comparing it with another main current without pulse mode.
These parameters are set in different situations in different ways, according to the
welder’s requirements. See paragraph 6.1 to change the value of any function in the current
welding mode
4. TUNGSTEN-ARC INERT-GAS (TIG) WELDING
Caution! As a shielding gas, pure argon "Ar" is most often used, sometimes helium
"He", as well as a mixture of them in various proportions.
DO NOT allow the use of flammable gases! Use of other gases is allowed only in
agreement with the equipment manufacturer.
t, sec t, sec t, sec